What is an important consideration when planning a dive with EANx?

When planning a dive with Enriched Air Nitrox (EANx), it is essential to consider both the oxygen percentage and the depth of the dive. This is primarily because EANx has a higher oxygen content compared to standard air, which can increase the risk of oxygen toxicity as the depth increases. The partial pressure of oxygen rises with depth, and if it exceeds safe limits, it can lead to serious health risks.

Additionally, the specific oxygen percentage in the gas mixture determines the maximum operating depth (MOD) for a safe dive. Each percentage of oxygen has a different MOD calculated based on the desired partial pressure of oxygen, ensuring that divers do not exceed safe limits during their dive.

Considering the temperature or physical fitness alone could lead to neglecting really critical factors that directly influence the safety and planning of the dive when using EANx. Hence, comprehensive awareness regarding both the oxygen content and depth ensures a safer diving experience.